US3987879A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Vehicle park-brake and gear shifter with an interlock
Assignee: Deutz Allis Corp
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Filing: 1975-11-17
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Granted: 1976-10-26
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Expires: 1995-11-17
Abstract
Abstract A vehicle park lock mechanism on a motor vehicle operated by a shift rail and shift lever to selectively operate the shifting of a gear ratio in the transmission and the park lock of the transmission drive shaft.
Inventors
- 👤 Donald W. Longshore
- 👤 Ferdynand Kolacz
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 06:28
CPC Classifications
F; F16; F16H; F16H63/00; F16H63/02; F16H63/30; F16H63/34; F16H63/3416; B; B60; B60T; B60T1/00; B60T1/005; F16H63/302; Y; Y10; Y10T; Y10T74/00; Y10T74/20; Y10T74/20012; Y10T74/20018; Y10T74/20085; Y10T74/20104; Y10T74/20116
Claims Analysis
Total Claims: 11
Claim 1
Independent Claim
195 words
A vehicle park lock mechanism in a motor vehicle transmission comprising, a multiple speed transmission including, a shift lever pivotally mounted in the transmission, a shift rail mounted for reciprocal movement in said transmission for selective movement by said shift lever, a detent means for selectively holding said shift rail in a gear shift position, a neutral position, and in a park lock position, a park lock carriage mounted on said shift rail for movement with said shift rail and for operating a park lock pawl lever to lock a braking gear, a gear shift fork slideably mounted on said shift rail, an interlock selectively locking said shift fork with said shift rail as said carriage engages said shift fork and said shift rail moves to and from the shift position, abutment means engaging said shift fork causing said interlock to disengage said shift fork from said shift rail as said shift rail moves to the park lock position to thereby selectively shift said transmission by movement of said shift rail in a first direction and to operate the park lock mechanism of said transmission by movement of said shift rail in a second direction.
Claim 2
Dependent Claim
195 words
A vehicle park lock mechanism in a motor vehicle transmission comprising, a multiple speed transmission including, a shift lever pivotally mounted in the transmission, a shift rail mounted for reciprocal movement in said transmission for selective movement by said shift lever, a detent means for selectively holding said shift rail in a gear shift position, a neutral position, and in a park lock position, a park lock carriage mounted on said shift rail for movement with said shift rail and for operating a park lock pawl lever to lock a braking gear, a gear shift fork slideably mounted on said shift rail, an interlock selectively locking said shift fork with said shift rail as said carriage engages said shift fork and said shift rail moves to and from the shift position, abutment means engaging said shift fork causing said interlock to disengage said shift fork from said shift rail as said shift rail moves to the park lock position to thereby selectively shift said transmission by movement of said shift rail in a first direction and to operate the park lock mechanism of said transmission by movement of said shift rail in a second direction.
Claim 3
Dependent Claim
28 words
A vehicle park lock mechanism in the motor vehicle transmission as set forth in claim 1, including a carriage shaft slideably supporting said carriage with said shift rail.
Claim 4
Dependent Claim
80 words
A vehicle park lock mechanism in a motor vehicle transmission as set forth in claim 1, wherein said interlock includes a stationary element in said transmission, means on said stationary element defining a recess, a ball, means defining a recess on said shift rail, an opening in said shift fork permitting said ball to selectively move from said recess in said stationary member and said recess in said shift rail to selectively lock said shift fork to said shift rail.
Claim 5
Dependent Claim
74 words
A vehicle park lock mechanism in a motor vehicle transmission as set forth in claim 1, including a braking gear adapted for rotation with a drive shaft, a pawl lever pivotally mounted in said transmission having a pawl selectively and alternatively engaging and disengaging said braking gear, a ramp on said pawl lever for engaging said carriage as said carriage is reciprocated with said shift rail for engaging said pawl with said braking gear.
Claim 6
Dependent Claim
49 words
A vehicle park lock mechanism in a motor vehicle transmission as set forth in claim 1, including a second shift rail in said transmission, a second interlock for selectively locking one of said shift rails while the other of said shift rails is reciprocally moved by said control lever.
Claim 7
Dependent Claim
102 words
A vehicle park lock mechanism in a motor vehicle transmission as set forth in claim 1, wherein said shift fork defines a bearing end slideably mounted on said shift rail, a radial opening in said bearing end, said interlock includes a pawl received in said radial opening of said bearing end of said shift fork, a carriage shaft defining a recess for selectively receiving said pawl of said interlock, means defining a recess on said shift rail for selectively receiving said pawl for locking said shift fork with said shift rail when said shift rail is moved to the reverse shift position.
Claim 8
Dependent Claim
61 words
A vehicle park lock mechanism in a motor vehicle transmission as set forth in claim 1, including a carriage shaft mounted in said transmission slideably supporting said park lock carriage, means defining an abutment on said carriage shaft, for limiting the movement of said shift fork with said shift rail when said shift rail is moved to the park lock position.
Claim 9
Dependent Claim
106 words
A vehicle park lock mechanism in a motor vehicle transmission as set forth in claim 1, including a carriage shaft, said interlock including a pawl, a radial opening in a bearing portion of said shift fork, means defining a recess in said carriage shaft, means defining a recess in said shift rail, means selectively biasing said pawl in said recess on said carriage rail to lock said shift fork with said carriage rail and selectively biasing said pawl into the recess in said shift rail to lock said shift fork with said shift rail when said shift rail is moved to and from the shift position.
Claim 10
Dependent Claim
67 words
A vehicle park lock mechanism in a motor vehicle transmission as set forth in claim 1, including a carriage shaft, said interlock including an element selectively locking said shift fork to said shift rail to move said shift fork and shift rail in unison when said shift rail is moved from the neutral position to the shift position, and from the shift position to the neutral position.
Claim 11
Dependent Claim
111 words
A vehicle park lock mechanism in a motor vehicle transmission as set forth in claim 1, including a carriage shaft mounted in said transmission, said carriage reciprocally mounted on said carriage shaft, said interlock including means defining a recess on said carriage shaft, means defining a recess in said shift rail, said shift fork defining a bearing end slideably mounting on said shift rail, means defining a radial opening in said shift fork, an interlock element reciprocally moving in said radial opening as said interlock selectively locks said shift fork to said carriage shaft and said shift fork to said shift rail as shift rail is reciprocated by said shift lever.
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1979-10-26 | 1980-04-26 | 1980-10-26 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1983-10-26 | 1984-04-26 | 1984-10-26 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1987-10-26 | 1988-04-26 | 1988-10-26 | $7700.00 | Window Closed / Lapsed |